HRSGs and fired boilers have many pipes that penetrate through the casing walls, roof and floor areas.  The penetration seal must allow for pipe expansion and withstand the high temperatures and corrosion risks that may accompany the pipe.

HRST has developed several retrofit pipe penetration seals to replace failed or damaged fabric and stainless steel bellows type seals.  HRST can offer a replacement all metal seal that uses innovative seal ring and seal plate strategies, first pioneered by HRST in 1999.  The seal can be installed with no pressure part welding.  If the application is appropriate, we can also offer a retrofit fabric pipe seal kit to replace torn or damage fabric.  We can customize all our pipe seals for your specific application.

PDF Brochures:  Roof or Floor Pipe Penetration Seals; Wall Penetration Seals

Above and Below:  HRST retrofit metal seal ring and seal plate style pipe penetration seals.

Below:  HRST fabric pipe penetration seal kits.

Client Testimonials

Boiler Product Design and Supply Service (May 2010)

Wisconsin,  USA 

This was a unique project because we asked HRST, Inc. to play the role of the middleman:  A power plant company was the customer and our company was the vendor.

The challenge for HRST, Inc. was to work with our company so that we could provide complete service to the power plant.  We relied heavily on the expertise provided by HRST, Inc. to deliver exactly what the customer needed.

I was impressed with the way HRST, Inc. communicated effectively and allowed us to keep our client happy throughout the process.  We needed HRST, Inc. to set up and provide us this high level of support and they did just that for us.

I would recommend HRST, Inc. to any company that had boiler engineering needs similar to ours.  They did a great job and I look forward to working with them in the future.